An automatic reading method of pointer meter based on YOLOv5s

Jiacheng Li; Xiaohui Yang; Xiaoming Liu; Taihui Wu; Huibin Zhao; Honglei Wang

doi:10.1117/12.2637498

13 May 2022 An automatic reading method of pointer meter based on YOLOv5s

Jiacheng Li, Xiaohui Yang, Xiaoming Liu, Taihui Wu, Huibin Zhao, Honglei Wang

Proceedings Volume 12248, Second International Conference on Sensors and Information Technology (ICSI 2022); 1224819 (2022) https://doi.org/10.1117/12.2637498
Event: 2nd International Conference on Sensors and Information Technology (ICSI 2022), 2022, Nanjing, China

Abstract

Pointer meters are widely used in transformer substations and other places because of their good robustness. Generally, the reading of pointer instrument cannot be read automatically, and can only rely on manual reading. With the development of robot and computer vision technology, it is possible to use inspection robot to obtain the reading of pointer instrument. The automatic reading of the analog meter should first detect the meter from the image, and then identify its reading. For the instability of traditional instrument detection, an analog meter automatic reading method based on YOLOv5s detector is proposed in this paper. Hough transform algorithm is used to detect the pointer and range, and then the meter reading is realized based on the angle method. Experiments show that the average processing time of a single image is 0.3s, and the reading error is less than 5%, which can meet the requirements of automatic reading in patrol inspection.

Citation Download Citation

Jiacheng Li, Xiaohui Yang, Xiaoming Liu, Taihui Wu, Huibin Zhao, and Honglei Wang "An automatic reading method of pointer meter based on YOLOv5s", Proc. SPIE 12248, Second International Conference on Sensors and Information Technology (ICSI 2022), 1224819 (13 May 2022); https://doi.org/10.1117/12.2637498

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KEYWORDS

Target detection

Detection and tracking algorithms

Hough transforms

Edge detection

Sensors

Analog electronics

Feature extraction

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